3-10
(2) Motor speed control
When driving the motor, the acceleration control is required to maintain the paper feed force of start up.
If acceleration of the motor does not perform correctly, the motor may not be able to rotate normally if it
has a heavy workload. Accelerate the speed sequentially up to the maximum motor drive pulse rate P
M
according to the Table 3-6 Acceleration Steps.
Acceleration should be performed by the acceleration step time below, that is output the phase.
1. Drive the start step as same as acceleration step time at Start acceleration step.
2. Drive the first step as same as acceleration step time at 1st acceleration step.
3. Drive the second step as same as acceleration step time at 2nd acceleration step.
4. Hereinafter, drive the "n"th step as same as acceleration step time at "n"th acceleration step.
5. After accelerating up to the maximum motor drive pulse rate P
M
, drive the motor at a constant speed.
Available to print during acceleration.
Follow the procedures below if :
Unable to accelerate the speed according to the acceleration step as shown in Table 3-6 .
The speed has been reduced at a certain speed and then accelerates the speed again.
The next step time after reducing the speed is the closest acceleration step time, which should be longer
than the previous acceleration step time and the shortest.
(Example) In the case of Table 3-6 , if the motor acceleration step time of the previous step is 900
μ
s, the
next step should be the 14th acceleration step (921
μ
s).
Hereinafter, accelerate the speed sequentially up to the maximum motor drive pulse rate P
M
. in
accordance with the acceleration step as show in Table 3-6 .
